Imaging and phase measurements of 3D objects at 10.6 microns by digital holography

Pietro Ferraro; Simonetta Grilli; Lisa Miccio; Paul Buahbassuah; Riccardo Meucci; Sergio De Nicola; F. Tito Arecchi

doi:10.1117/12.746239

30 October 2007 Imaging and phase measurements of 3D objects at 10.6 microns by digital holography

Pietro Ferraro, Simonetta Grilli, Lisa Miccio, Paul Buahbassuah, Riccardo Meucci, Sergio De Nicola, F. Tito Arecchi

Proceedings Volume 6736, Unmanned/Unattended Sensors and Sensor Networks IV; 673612 (2007) https://doi.org/10.1117/12.746239
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

Digital holography in the mid infrared range is shown to be a feasible technique for optical metrological applications. The technique allows to reconstruct both amplitude and phase of wavefronts scattered by a 3D object. Experimental results of the method applied to the reconstruction of digitally holograms recorded at CO₂ laser wavelength of 10.6 micron are reported. It is show that good reconstructions can be obtained even with the lower spatial resolution of IR recording detectors compared to visible CCD array. The results show that new prospective can be exploited by using high power CO₂ laser sources in optical metrological applications.

Citation Download Citation

Pietro Ferraro, Simonetta Grilli, Lisa Miccio, Paul Buahbassuah, Riccardo Meucci, Sergio De Nicola, and F. Tito Arecchi "Imaging and phase measurements of 3D objects at 10.6 microns by digital holography", Proc. SPIE 6736, Unmanned/Unattended Sensors and Sensor Networks IV, 673612 (30 October 2007); https://doi.org/10.1117/12.746239

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